1. Stem swivel caster must be installed in which the manufacturer specified design location.
2. The installation of the castor bracket must have sufficient strength, which to meet the load when used.
3. The function of casters can not be changed, nor affected by the installation of the device.
4. Turning the wheel axle must always be vertical.
5. The casters and its axle must be in a straight line when they fixed.
6. If you are using only rotating casters, they must be consistent.
7. If the small castors are used in conjunction with the swivel castors, all casters must be compatible with each other and must be approved by the manufacturer.